package com.mfizz.observer.core;

/*
 * #%L
 * mfizz-observer-core
 * %%
 * Copyright (C) 2012 mfizz
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

import java.net.URL;

/**
 *
 * @author joe@mfizz.com
 */
public class ShortHostObserverNamingStrategy implements ObserverNamingStrategy {
    
    @Override
    public String createName(String url) throws Exception {
        URL realurl = new URL(url);
        String host = realurl.getHost();
        int pos = host.indexOf('.');
        if (pos > 0) {
            return host.substring(0, pos);
        } else {
            return host;
        }
    }
    
}
